Scraper for seed-drills.



No. 69!,0l6. Patented m. M, I902.

W/STEPHENSUN.

SCRAPEB FOB SEED DIHLLS.

(Application filed Dec. 16, 1900.)

(No Model.)

WMMMQ .11 mimfmz UNiTnn ETaTns PATENT Orricn.

WILLIAM STEPHENSON, OF MORRIS, CANADA.

SCRAPER FOR SEED DRILLS.

$PEGIFIGATION formingpart of Letters Eatent No. 691,016, dated January14, 1902. Application filed December 15, 1900. Serial No. 391948. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM STEPHENSON, a citizen of the Dominion ofCanada, and a resident of Morris, in the county of Provencher,Province'oflvfanitoba, Canada, residing temporarily at St. Louis Park,Minneapolis, in the county of Hennepin, in the State of Minnesota, haveinvented a certain new and useful Improvement in Scrapers for Seed-Drills; and I do hereby declare that the fol lowing is a full, clear,and exact description of the construction and operation of the same.

The object of the device is to further improve the seed-drill scrapersin addition to those already patented by me; and the present inventionrelates more particularly to an improved form of the scraper which ismade to operate between the disks of the drill-shoe and which consistsin forming the center scraper or the one Working between the disksconvex on. the outside and concave on the inside in order to work moresmoothly in that position and prevent the frictional noise when inoperation, which was more or less objectionable in my old method ofconstruction.

By my present improved construction of the form of the said centerscraper its edges impinge on the inside of the disks at a differentangle as it does when straight across and renders the device nearlynoiseless, if not absolutely so, a condition to be greatly desired.

By reference being made to the accompanying drawings, forming part ofthis specification, Figure 1 represents a side view of a seed-drillframe and spout with the disks removed. Fig. 2 is a rear elevation withdisks attached and center scraper between them. Fig. 3 is a rear view ofcenter scraper detached from the disks. Fig. 4 is across-section of thecenter scraper.

In the drawings, A A represent two disks attached to the axles of thegrain-spout and frame 13, the rear part a of the said frame projectingbackward, terminating in a curve b, with a projection c on the inside,through which a hole d is made and screw-threaded to receive thescreW-boltf, which secures the center scraper to the frame.

0 is the center scraper, formed convex on the outside and concave on theinside, as shown at Figs. 3 and 4:, and slightly tapering on the sidesdownward to fit the space between the disks A. A Vertical slotg isformed in the said scraper C for a screw-boltfto pass through and intothe hole 01. WVhen the scraper is placed on the rear end of the frame aand tightened, a washer his interposed between the head of the screw andthe scraper,

and the elongation of the slot 9 allows the scraper to be adjustedvertically to impinge on the disks A and take up the wear of the scraperwhen necessary. As the edges of the said scraper, being convex, do notimpinge at right angles on the disks, the frictional noise is therebyprevented that would otherwise be eaused if the edges of the scraperimpinged at right angles on the disks.

Having thus described my device and its advantages, what I claim as myinvention 1s- 1. In combination with the disks of a seeddrill shoe,acenter scraper constructed of concavo-convex form, and secured betweenthe disks, whereby the edges of the center scraper impinge on the disksat an angle to prevent noise.

2. In combination with the disks of a seeddrill shoe, a curved centerscraper 0, formed concavo-convex with a vertical slot g, formed .thereinand secured to the corresponding curved frame a, h, of the grain-spoutof a seed-drill by a projection 0, having hole (1, screw-threaded toreceive bolt f to operate between the disks to keep the inside faces ofthe disks free from soil and operate smoothly without noisesubstantially as specified.

Dated at Minneapolis, Minnesota, the 20th day of October, 1900.

WILLIAM STEPHENSON. In presence of-- DW'IG-HT EDMOND MERCHANT,- GEORGEFRANK MOSELEY.

